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Yellowing leaves

Floristas
Floristasstarted grow question 2 years ago
I have couple of plants that started yellowing way to early its week 5 now, any idea why? we having extreme temperatures atm so its 27 degrees while they sleeping. Maybe they need extra flushing or sth like that?
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Leaves. Color - Yellow
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DutchDoobie
DutchDoobieanswered grow question 2 years ago
High Floristas, This is a nitrogen dificiency in the late stage. The cause of this dificiency could be pH issues or overfeeding. You can measure the pH from your soil to make sure that this is not the cause. I will explain how to do this. And if the pH is in the right range then you need to flush your soil so you can start giving the right amount of nutrients again after the flushing. I will explain you how to flush the soil after I explained you how to measure pH in soil. To measure pH in soil, just follow these steps. Your pH should be around 6.2. 1. Place soil sample about ¾ full in sample jar and add distilled water to cover soil. 2. Cap the jar and shake the soil vigorously a few times. 3. Let mixture stand 10 minutes to dissolve the salts in the soil. 4. Place the pH tester into the wet soil slurry. 5. Measure pH and record measurement. If the pH is in the right range then flush out the nutrients with a good flush of your soil. For this flush just follow these steps: You can do this flushing by slowly pour water pH 6.2 onto the top of the soil, allowing it to drain freely from the bottom of the pot. Pour slowly, so the water doesn't overflow from the top of the pot. Use approximately four times the pot's volume in water to flush the soil. For example, use 1 gallon of water for a 1 quart pot. After the flushing you need to let the soil (almost) dry out completely. From there you can start giving water with pH 6.2 and nutrients but do not exceed EC 1.8 to make sure that you don't overfeed them in their last weeks. Happy Growing! 😋
Psilocubensis
Psilocubensisanswered grow question 2 years ago
https://www.growweedeasy.com/cannabis-symptoms-pictures have that in hands.
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Floristas
Floristasanswered grow question 2 years ago
Thank you for all the answers guys, I will try to flush them whit 4x of the water ph 6.2, The water ph stays 6.2 in the water tanks anyway, and i will also try to mix half grow half bloom food to feed them when their soil gets dry after flushing. Its just strange because its only 4 plants out of 100 acting up like this
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ernest_twwg
ernest_twwganswered grow question 2 years ago
Check the trichomes on them, they may be finishing faster than the others.
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Itsgnomegrown
Itsgnomegrownanswered grow question 2 years ago
Them plants got about three weeks to go when they’re finished. In a week do a flush if you prefer, water once at week two, and let her dry out till the leaves crumble and you will be welcome.
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Itsgnomegrown
Itsgnomegrownanswered grow question 2 years ago
That yellowing looks like yellowing off. The plant does that to say she’s almost about to push another set of fresh pistils out and swell more. If all of your top leaves or all of your bottom leaves for that color it would be a problem.
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Organoman
Organomananswered grow question 2 years ago
Nitrogen deficiency..... probably from switching to bloom nutrients too early, cannabis still needs adequate nitrogen in early flower. The leaves are going yellow because your plants are consuming themselves due to starving for nitrogen. For the next couple of feeds try giving half bloom and half (strength) grow nutrients to top up the available nitrogen. This should slow the progression, but will not "fix" the damaged leaves. It is not caused by high temps.
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GrowingGrannie
GrowingGrannieanswered grow question 2 years ago
Well, could be a calcium deficiency - but then, it could be ... you know, without a diary on this grow, it's hard to pinpoint your problem. I'd probably flush, I'd look at the pH, I'd look at your nitrogen levels, I'd look at a number of things a diary would tell me. Heat is not doing this, THAT I can tell you.. Start a diary and then ask your question again! Good luck
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